Characterisation of Polycrystalline Cubic Boron Nitride Tool Materials

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dc.contributor.authorLindgren, Kristina
dc.contributor.departmentChalmers tekniska högskola / Institutionen för teknisk fysiksv
dc.contributor.departmentChalmers University of Technology / Department of Applied Physicsen
dc.date.accessioned2019-07-03T13:20:44Z
dc.date.available2019-07-03T13:20:44Z
dc.date.issued2013
dc.description.abstractThe reactions that occur during sintering of polycrystalline cubic boron nitride composite (PCBN) tool materials and their dependence on starting powder composition have been mapped. The starting powder mixtures of the PCBN composites consist of cBN, Ti(C,O,N), Al, and milling body debris. Two different types of milling bodies were used, WC-Co and cermet ((Ti,W)(C,N) grains in a Co binder phase). The PCBN materials were investigated before sintering, after pre sintering (900 C) and after high pressure high temperature sintering (1400 C) in order to understand the processes taking place. Methods used were XRD and SEM/XEDS. The Al was found to melt during the pre sintering and react with either W or Co. Among the phases found in the high pressure high temperature sintered materials were cBN, Ti(C,O,N), (Ti,W)(C,O,N), AlN, TiB2, WC, Al2O3, W2CoB2 and two unidentified phases.
dc.identifier.urihttps://hdl.handle.net/20.500.12380/193034
dc.language.isoeng
dc.setspec.uppsokPhysicsChemistryMaths
dc.subjectGrundläggande vetenskaper
dc.subjectMaterialteknik
dc.subjectHållbar utveckling
dc.subjectInnovation och entreprenörskap (nyttiggörande)
dc.subjectMaterialvetenskap
dc.subjectBasic Sciences
dc.subjectMaterials Engineering
dc.subjectSustainable Development
dc.subjectInnovation & Entrepreneurship
dc.subjectMaterials Science
dc.titleCharacterisation of Polycrystalline Cubic Boron Nitride Tool Materials
dc.type.degreeExamensarbete för masterexamensv
dc.type.degreeMaster Thesisen
dc.type.uppsokH
local.programmeApplied physics (MPAPP), MSc
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